US3269264A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for exhibiting couplingthread contour
Assignee: United States Steel Corp
•
Filing: 1964-05-28
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Granted: 1966-08-30
•
Expires: 1984-05-28
Abstract
No abstract record available.
Inventors
- 👤 George G Cocks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:05
CPC Classifications
G; G02; G02B; G02B21/00; G02B21/0004; G02B21/0016
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
OPTICAL APPARATUS FOR EXHIBITING A COUPLING-THREADED CONTOUR COMPRISING A HAIRLINE RETICLE, MEANS FOR ILLUMINATING THE HAIRLINE, FIRST OPTICAL MEANS ADAPTED TO PROJECT A BLACK IMAGE OF SAID HARILINE WITH A LIGHT BACKGROUND ONTO A COUPLING THREAD AND SECOND OPTICAL MEANS ADAPTED TO PICK UP AND PROJECT AN IMAGE OF THE THREAD PROFILE PRODUCED BY SAID HAIRLINE IMAGE.
Claim 2
Dependent Claim
57 words
OPTICAL APPARATUS FOR EXHIBITING A COUPLING-THREADED CONTOUR COMPRISING A HAIRLINE RETICLE, MEANS FOR ILLUMINATING THE HAIRLINE, FIRST OPTICAL MEANS ADAPTED TO PROJECT A BLACK IMAGE OF SAID HARILINE WITH A LIGHT BACKGROUND ONTO A COUPLING THREAD AND SECOND OPTICAL MEANS ADAPTED TO PICK UP AND PROJECT AN IMAGE OF THE THREAD PROFILE PRODUCED BY SAID HAIRLINE IMAGE.
References Cited (Backward Citations)
GB395649A
Cited
US2196922A
Cited
US2256102A
Cited
US2327289A
Cited
US2506498A
Cited
US2552272A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-29 | 1970-02-28 | 1970-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-29 | 1974-02-28 | 1974-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-29 | 1978-02-28 | 1978-08-30 | $7700.00 | Window Closed / Lapsed |